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PM-3112-240P Single-Phase Power Meter, 2 Loops, Modbus RTU, 200 A CT

Product information "PM-3112-240P Single-Phase Power Meter, 2 Loops, Modbus RTU, 200 A CT"

The PM-3112-240P CR is a single-phase power meter that measures two independent loops with true RMS values. It reports voltage, current, active, apparent and reactive power and energy, power factor and frequency, updated every second over RS-485 using Modbus RTU. Two clip-on 200 A current transformers are included, so the meter can be fitted to live conductors without disconnecting the circuit.

This variant suits engineers who need accurate energy readings on 1P2W circuits up to 200 A. Its 10 ~ 300 VAC input range and 0.5% active power accuracy at unity power factor make it suitable for monitoring both low-voltage and higher-voltage secondary-side equipment. The two Form A power relay outputs can drive sirens or lights for alarm signalling.

The meter is housed in a plastic DIN-rail enclosure and runs from a +12 ~ 48 VDC supply. Its RS-485 port is isolated at 3000 VDC and offers selectable baud rates and data formats. Typical applications include generator monitoring, switchgear distribution systems and energy management.

Applications

  • Generator monitoring
  • Switchgear distribution systems
  • Energy management
Product type: Power meter
Interface: RS-485
Protocol: Modbus RTU
Relay outputs: 2
Ports: 1
Isolation: 3000 VDC
Power input: +12 ~ 48 VDC
Operating temperature: -20 ~ +70 °C
Mounting: DIN-rail
Housing: Plastic

Specifications

AC Power Measurement
Wiring1P2W-1CT
Loops1-phase: 2
Input Voltage10 ~ 300 V
Input CurrentPM-3112-100: CTØ10 mm (0.05 A ~ 60 A)
PM-3112-100P: CTØ10 mm (0.05 A ~ 60 A)
PM-3112-160: CTØ16 mm (0.1 A ~ 100 A)
PM-3112-160P: CTØ16 mm (0.1 A ~ 100 A)
PM-3112-240: CTØ24 mm (0.15 A ~ 200 A)
PM-3112-240P: CTØ24 mm (0.15 A ~ 200 A)
Input Frequency50/60 Hz
W AccuracyBetter than 0.5% (PF=1)
Power Parameter MeasurementTrue RMS voltage (Vrms), True RMS current (Irms), Active Power (kW), Active Energy (kWh), Apparent Power (kVA), Apparent Energy (kVAh), Reactive Power (kVAR), Reactive Energy (kVARh), Power Factor (PF), Frequency
Data Update Rate1 Second
Relay Output
Channels2
TypePower Relay
Contact RatingForm A:
5 A @ 250 VAC
5 A @ 30 VDC
COM Ports
Ports1 x RS-485
Baud Rate9600, 19200 (default), 38400, 115200; DIP Switch Selectable
Data FormatN,8,1 (default); N,8,2; E,8,1; E,8,2; O,8,1; O,8,2
ProtocolModbus RTU
Isolation3000 VDC
Power
Input Range+12 ~ 48 VDC
Consumption2W
Mechanical
CasingPlastic
Dimensions (mm)33 x 127 x 100 (W x L x H)
InstallationDIN-Rail Mounting
Environment
Operating Temperature-20 ~ +70 °C
Storage Temperature-25 ~ +80 °C
Humidity10 ~ 90% RH, Non-condensing

Specifications as published by the manufacturer. Subject to change.

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